Think my settings are S5, and Normal (think it was a Motor Trend article that recommended that because of the range of adjustment?). Everything else is the same.
BUT - MDM is a good choice for me in good conditions, because it's only mildly intrusive, but will help save you on the street if you run into sub-optimal conditions on a spirited drive (e.g. gravel on a fast corner). I don't turn DSC off unless I'm on a track where I know the surface is good. Your mileage may vary...
AND, I don't turn MDM on in the rain, simply because as a DD, I'm happy to let the M save itself if a moment's inattention creates something bad. Bundling into a tree because I'm on a conference call with Taipei and go into a corner harder than normal with no safeguards isn't high on the list of priorities...
2009 E93 M3 - it's, um, pretty fun